Re: [ns] RTS/CTS Handshaking in 802.11

[Vikram Kanodia <kanodia@ece.rice.edu>]

Hi,

 That's because only the DCF (Distributed control functions) are
implemented in ns-2.....

-Vikram

p.s.: you can easily extend mac-802_11.cc to take into account normal CSMA
(which is the mode where RTS/CTS is not used)...




> Hi Everyone,
> In IEEE802.11, I tried to change RTSThresholed value (mac-802_11.h)
> to see RTS/CTS handshaking effect on the performance. My packet size was 512 bytes
> and the RTSThresholed default value was 3000. When I change it to 300, nothing has changed in
> the performance and as u already know it will affect at least the delay of the packet.
> When I go through mac-502_11.cc source code I found RTS/CTS is used regardless 
> the RTSThresholed, eventhough this idea is mentioned in the comment . 
> Am I right?.
> Have anyone checked that before?
> 
> 
> Regards,
> Mohammed Al-kahtani
> 
> 


Department of ECE, Rice University | 713 348 3786 (O)| 713 664 5650(H)
http://www.ece.rice.edu/~kanodia